Beastie Boys is a hip hop musical group from New York City, consisting of Michael "Mike D" Diamond, Adam "MCA" Yauch, Adam "Ad-Rock" Horovitz and the official DJ for the group Michael "Mix Master Mike" Schwartz.

The group matured with their second album, Paul's Boutique, produced by the Dust Brothers and Matt Dike. Recorded in 1988, this extremely sample-heavy opus is still considered one of the strongest works by the Beasties. It is also considered a landmark in hip hop recordings due to its intricate use of multi-layering and large array of samples.

The Beastie Boys signed an eclectic roster of artists to the Grand Royal label including Luscious Jackson, Sean Lennon and promising Australian artist Ben Lee. The Beastie Boys owned Grand Royal Records until 2001 when it was then sold for financial reasons. Grand Royal's first independent release was Luscious Jackson's album In Search of Manny in 1993.

The Beastie Boys returned to New York City in 1997 to produce and record the album Hello Nasty. The album displayed a substantial shift in musical feel, with the departure of DJ Hurricane. He was replaced by Mix Master Mike, who added to the Beasties' sound with his kinetic DJ style. Released July 14, 1998, Hello Nasty clocked first week sales of nearly 700,000 in the U.S. and went straight to #1 in the U.S., the UK, Germany, Australia, The Netherlands, New Zealand, and Sweden. The album achieved #2 rank in the charts in Canada and Japan, and was in the Top Ten in Austria, Switzerland, Ireland, Belgium, Finland, France, and Israel.

The 1999 Tibetan Freedom Concerts featured shows in East Troy, Wisconsin, Sydney, Tokyo, and Amsterdam. On 28 September 1999, the Beastie Boys joined Elvis Costello to play "Radio, Radio" on the 25th anniversary of Saturday Night Live.

The Beastie Boys released The Sounds of Science, a two-CD anthology of their works in 1999. This album reached #19 on the Billboard 200, #18 in Canada, #6 on the Internet sales charts, and #14 on the R&B/Hip Hop charts. The one new song, the single "Alive", reached #11 on the Billboard's Modern Rock chart.

The band stated in mid-2006 that they were writing material for their next album and would be producing it themselves.

A controversial concert in Columbus, Georgia in 1987 led to the passage of a lewdness ordinance in that city.

In 2003, Beastie Boys were involved in the landmark sampling decision, Newton v. Diamond. In that case, a federal judge ruled that the band was not liable for sampling James Newton's "Choir" in their track, "Pass the Mic". The sample used is the six-second flute stab. In short, the Beasties cleared the sample but only obtained the rights to use the sound recording and not the composition rights to the song "Choir". In the decision, the judge found that "when viewed in relation to Newton's composition as a whole, the sampled portion is neither quantitatively nor qualitatively significant... Because Beastie Boys' use of the sound recording was authorized, the sole basis of Newton's infringement action is his remaining copyright interest in the 'Choir' composition. We hold today that Beastie Boys' use of a brief segment of that composition, consisting of three notes separated by a half-step over a background C note, is not sufficient to sustain a claim for copyright infringement."